diff --git a/packages/sdk/test/vocabulary.test.ts b/packages/sdk/test/vocabulary.test.ts
index 0758b41..f962f6b 100644
--- a/packages/sdk/test/vocabulary.test.ts
+++ b/packages/sdk/test/vocabulary.test.ts
@@ -91,37 +91,71 @@ function words(name: string): string[] {
 
 const SRC = path.join(import.meta.dir, "..", "src");
 
-/** Every identifier the entry point publishes, read from its `export` statements. */
-function publishedNames(): string[] {
+/**
+ * The names a module really EXPORTS — declarations and named re-exports, comments
+ * stripped first.
+ *
+ * ── Why the comments have to go, and why it is not a detail ────────────────
+ * This used to be a word-search over the module's whole text. A name mentioned
+ * ANYWHERE — including in a comment explaining why it was removed — counted as
+ * exported. Measured on 2026-08-07: `documentInboxAddress`, `escapeLiteral`,
+ * `getCaps`, `addLink`, `setCurrentUser` all passed, and so did **`linkTo`** — the
+ * function deleted for breaking the access rule, whose absence is documented in a
+ * comment inside `surface/placement.ts`. So the two checks below could wave through
+ * a phantom, which is how the contract drifted through five sections unseen.
+ *
+ * A gate that says yes to a name that is not there is worse than no gate: it reads
+ * as verified.
+ */
+function moduleExports(file: string): Set<string> {
   const out = new Set<string>();
-  for (const entry of ["index.ts"]) {
-    const text = fs.readFileSync(path.join(SRC, entry), "utf8");
-    // `export * as ns from "…"`
-    for (const m of text.matchAll(/export \* as (\w+) from/g)) out.add(m[1]!);
-    // `export { a, b as c }` / `export type { … }`, single- and multi-line
-    for (const m of text.matchAll(/export (?:type )?\{([^}]*)\}/g)) {
-      for (const raw of m[1]!.split(",")) {
-        const name = raw.trim().replace(/^type /, "").split(/\s+as\s+/).pop()?.trim();
-        if (name) out.add(name);
-      }
-    }
-    // `export const x` / `export function x` / `export interface x`
-    for (const m of text.matchAll(/export (?:declare )?(?:const|function|class|interface|type) (\w+)/g)) {
-      out.add(m[1]!);
-    }
-    // `export * from "./x"` — re-exports every name that module declares.
-    for (const m of text.matchAll(/export \* from "\.\/([^"]+)"/g)) {
-      const file = path.join(SRC, m[1]! + ".ts");
-      if (!fs.existsSync(file)) continue;
-      const t = fs.readFileSync(file, "utf8");
-      for (const mm of t.matchAll(/^export (?:declare )?(?:const|function|class|interface|type) (\w+)/gm)) {
-        out.add(mm[1]!);
-      }
+  if (!fs.existsSync(file)) return out;
+  const text = fs
+    .readFileSync(file, "utf8")
+    .replace(/\/\*[\s\S]*?\*\//g, "")   // block and JSDoc comments
+    .replace(/^\s*\/\/.*$/gm, "");     // line comments
+  // `export function x` / `export const x` / `export interface x` / …
+  for (const m of text.matchAll(/^export (?:declare )?(?:async )?(?:const|function|class|interface|type) (\w+)/gm)) {
+    out.add(m[1]!);
+  }
+  // `export { a, b as c }` and `export { … } from "…"`, single- and multi-line.
+  for (const m of text.matchAll(/export (?:type )?\{([^}]*)\}/g)) {
+    for (const raw of m[1]!.split(",")) {
+      const name = raw.trim().replace(/^type /, "").split(/\s+as\s+/).pop()?.trim();
+      if (name) out.add(name);
     }
   }
+  return out;
+}
+
+/** namespace name → the names it really carries (`export * as ns from "./x"`). */
+function namespaces(): Map<string, Set<string>> {
+  const text = fs.readFileSync(path.join(SRC, "index.ts"), "utf8");
+  const out = new Map<string, Set<string>>();
+  for (const m of text.matchAll(/export \* as (\w+) from "\.\/([^"]+)"/g)) {
+    out.set(m[1]!, moduleExports(path.join(SRC, m[2]! + ".ts")));
+  }
+  return out;
+}
+
+/** Every identifier the entry point publishes, read from its `export` statements. */
+function publishedNames(): string[] {
+  const text = fs.readFileSync(path.join(SRC, "index.ts"), "utf8");
+  const out = moduleExports(path.join(SRC, "index.ts"));
+  for (const m of text.matchAll(/export \* as (\w+) from/g)) out.add(m[1]!);
+  // `export * from "./x"` — re-exports every name that module declares.
+  for (const m of text.matchAll(/export \* from "\.\/([^"]+)"/g)) {
+    for (const n of moduleExports(path.join(SRC, m[1]! + ".ts"))) out.add(n);
+  }
   return [...out];
 }
 
+/** Names that live inside a re-exported namespace rather than on the entry itself. */
+function isNamespaceMember(name: string): boolean {
+  for (const members of namespaces().values()) if (members.has(name)) return true;
+  return false;
+}
+
 test("every published name is built from the target's vocabulary, or carries an emulation marker", () => {
   const offenders: string[] = [];
   for (const name of publishedNames()) {
@@ -237,6 +271,21 @@ function contractInventory(): Record<string, string[]> {
   return out;
 }
 
+test("the appendix's namespace groups list exactly what each namespace carries", () => {
+  // The check above compares the appendix against the ENTRY's own names, so a namespace
+  // member missing from its group slipped through: `inbox:` could lose an entry and
+  // nothing noticed. Here each group is compared to its module's real exports, both ways.
+  const inventory = contractInventory();
+  const drift: Record<string, { missing: string[]; extra: string[] }> = {};
+  for (const [ns, members] of namespaces()) {
+    const listed = new Set(inventory[ns] ?? []);
+    const missing = [...members].filter((n) => !listed.has(n)).sort();
+    const extra = [...listed].filter((n) => !members.has(n)).sort();
+    if (missing.length || extra.length) drift[ns] = { missing, extra };
+  }
+  expect(drift).toEqual({});
+});
+
 test("the api-contract appendix lists exactly what the entry exports", () => {
   // The appendix is the instrument a reader diffs against when the surface moves. It
   // went stale once — still naming `storeRegistry`'s shim internals after the entry had
@@ -256,17 +305,3 @@ test("the api-contract appendix lists exactly what the entry exports", () => {
   expect({ missing, extra }).toEqual({ missing: [], extra: [] });
 });
 
-/** Names that live inside a re-exported namespace rather than on the entry itself. */
-function isNamespaceMember(name: string): boolean {
-  const src = path.join(import.meta.dir, "..", "src");
-  for (const entry of ["index.ts"]) {
-    const text = fs.readFileSync(path.join(src, entry), "utf8");
-    for (const m of text.matchAll(/export \* as \w+ from "\.\/([^"]+)"/g)) {
-      const file = path.join(src, m[1]! + ".ts");
-      if (fs.existsSync(file) && new RegExp(`\\b${name}\\b`).test(fs.readFileSync(file, "utf8"))) {
-        return true;
-      }
-    }
-  }
-  return false;
-}